Abstract:
:This study assessed the relationship between the rate of change of the rating of perceived exertion (RPE), physiological activity, and time to volitional exhaustion. After completing a graded exercise test, 10 participants cycled at a constant load equating to 75% of peak oxygen uptake (V O(2)peak) to exhaustion. Participants performed two further constant load exercise tests at 75%V O(2)peak in a fresh state condition within the next 7 days. The RPE was regressed against time and percentage of the time (%time) to volitional exhaustion in both conditions. Despite a lower respiratory exchange ratio (RER) and higher heart rate at the start of the exercise bout in the fatigued condition, there were no differences in RPE at the onset or completion of exercise. As expected, the rate of increase in RPE was greater in the fatigued condition, but there were no differences when expressed against %time. Results suggest that RPE is set at the start of exercise using a scalar internal timing mechanism, which regulates RPE by altering the gain of the relationship with physiological parameters such as heart rate and RER when these are altered by previous fatiguing exercise.
journal_name
Psychophysiologyjournal_title
Psychophysiologyauthors
Eston R,Faulkner J,St Clair Gibson A,Noakes T,Parfitt Gdoi
10.1111/j.1469-8986.2007.00558.xsubject
Has Abstractpub_date
2007-09-01 00:00:00pages
779-86issue
5eissn
0048-5772issn
1540-5958pii
PSYP558journal_volume
44pub_type
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